Does anyone know why these cards are alwyas sold out.

Ive spent more time checking if they are in stock then actually playing anyting. When Ive tried to purchase (8 so far) them at diffrent prices throughout the day and all of my atempted purchases ended up as “Transaction Cancelled”. Im so fed up with this stupid company, I have been submiting a “submiting ticket” for each faild transaction. 

I cant be the only one here.